1,500 ships trapped in Gulf of Hormuz are quietly multiplying an underwater army that could unleash World's biggest bioinvasion event

Gulf of Hormuz underwater army: Nearly fifteen hundred ships stuck in the Persian Gulf after fighting closed the Strait of Hormuz. These idle vessels are now becoming breeding grounds for marine invasive species, whose build-up of organisms on ship hulls increases fuel consumption significantly. Scientists urge stricter rules to prevent a major bioinvasion event.